Remove useless functions and attributes.

Change-Id: I06add5dc02c926190efd3a7ae916750096bad5a2
Fix pep8 errors.

Change-Id: I85e57b345f36da5c7328c67f1ba705693a2cf41c
Remove useless 'Access Permission' column.

Change-Id: I9b1b78f3bc64cb06336e261ae320182e65b33d28